145733999 has 2 divisors, whose sum is σ = 145734000. Its totient is φ = 145733998.

The previous prime is 145733983. The next prime is 145734031. The reversal of 145733999 is 999337541.

It is a weak prime.

It is an emirp because it is prime and its reverse (999337541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145733999 - 2⁴ = 145733983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145733909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72866999 + 72867000.

It is an arithmetic number, because the mean of its divisors is an integer number (72867000).

Almost surely, 2^145733999 is an apocalyptic number.

145733999 is a deficient number, since it is larger than the sum of its proper divisors (1).

145733999 is an equidigital number, since it uses as much as digits as its factorization.

145733999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 50.

The square root of 145733999 is about 12072.0337557513. The cubic root of 145733999 is about 526.2437619224.

The spelling of 145733999 in words is "one hundred forty-five million, seven hundred thirty-three thousand, nine hundred ninety-nine".